Display module and display apparatus

Abstract

The present application discloses a display module and a display apparatus. The display module includes a base plate, a light-emitting layer, and a light-filtering layer. The light-emitting layer is arranged at one side of the base plate and includes a plurality of light-emitting units. The light-filtering layer is arranged at a side of the light-emitting layer away from the base plate and includes a light-filtering portion, a light-shielding portion, and an optical adjustment portion. An orthographic projection of the light-filtering portion on the base plate at least partially overlaps an orthographic projection of the light-emitting unit on the base plate, at least one optical adjustment portion is arranged between adjacent light-filtering portions, the optical adjustment portion at least partially contacts with the light-filtering portion, and a refractive index of the optical adjustment portion is less than a refractive index of the light-filtering portion.

What is claimed is: 
     
         1 . A display module, comprising:
 a base plate;   a light-emitting layer, arranged at one side of the base plate, and comprising a plurality of light-emitting units;   a light-filtering layer, arranged at a side of the light-emitting layer away from the base plate, and comprising a light-filtering portion, a light-shielding portion, and an optical adjustment portion; an orthographic projection of the light-filtering portion on the base plate at least partially overlaps an orthographic projection of the light-emitting unit on the base plate, at least one optical adjustment portion is arranged between adjacent light-filtering portions, the optical adjustment portion at least partially contacts with the light-filtering portion, and a refractive index of the optical adjustment portion is less than a refractive index of the light-filtering portion; an orthographic projection of the light-shielding portion on the base plate is located within an orthographic projection of the optical adjustment portion on the base plate.   
     
     
         2 . The display module according to  claim 1 , wherein the orthographic projection of the optical adjustment portion on the base plate is spaced apart from the orthographic projection of the light-emitting unit on the base plate. 
     
     
         3 . The display module according to  claim 2 , wherein in a direction parallel to the base plate, a difference between a distance from the light-filtering portion to an edge of the optical adjustment portion and a distance from the light-filtering portion to an edge of the light-shielding portion is L, and L satisfies: 3 μm≤L≤6 μm. 
     
     
         4 . The display module according to  claim 2 , wherein the light-emitting units comprise a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit that are different from one another in color, the light-filtering layer comprises a first light-filtering portion, a second light-filtering portion, and a third light-filtering portion, an orthographic projection of the first light-filtering portion on the base plate at least partially overlaps that of the first light-emitting unit, an orthographic projection of the second light-filtering portion on the base plate at least partially overlaps that of the second light-emitting unit, and an orthographic projection of the third light-filtering portion on the base plate at least partially overlaps that of the third light-emitting unit; and
 in a direction parallel to the base plate, a difference between a distance from the first light-filtering portion to an edge of the optical adjustment portion and a distance from the first light-filtering portion to an edge of the light-shielding portion is L 1 , a difference between a distance from the second light-filtering portion to the edge of the optical adjustment portion and a distance from the second light-filtering portion to the edge of the light-shielding portion is L 2 , and a difference between a distance from the third light-filtering portion to the edge of the optical adjustment portion and a distance from the third light-filtering portion to the edge of the light-shielding portion is L 3 , and L 1 , L 2  and L 3  satisfy:   L 1 >L 2 , and L 1 >L 3 ; wherein light-emitting efficiency of the first light-emitting unit is less than light-emitting efficiency of the second light-emitting unit, and less than light-emitting efficiency of the third light-emitting unit.   
     
     
         5 . The display module according to  claim 4 , wherein L 1 , L 2  and L 3  satisfy: L 1 >L 2 >L 3 ; wherein white light brightness ratio of the third light-emitting unit is greater than white light brightness ratio of the first light-emitting unit, and greater than white light brightness ratio of the second light-emitting unit. 
     
     
         6 . The display module according to  claim 5 , wherein the first light-emitting unit is a blue light-emitting unit, and the third light-emitting unit is a green light-emitting unit. 
     
     
         7 . The display module according to  claim 1 , wherein the orthographic projection of the optical adjustment portion on the base plate partially overlaps the orthographic projection of the light-filtering portion on the base plate. 
     
     
         8 . The display module according to  claim 7 , wherein an angle between a sidewall surface of the optical adjustment portion facing the light-filtering portion and a plane in a direction parallel to the base plate is α, and α satisfies: 60°≤α≤90°. 
     
     
         9 . The display module according to  claim 8 , wherein α satisfies: 70≤α≤80°. 
     
     
         10 . The display module according to  claim 7 , wherein
 the light-emitting units comprise a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit that are different from one another in color,   the light-filtering layer comprises a first light-filtering portion, a second light-filtering portion, and a third light-filtering portion,   an orthographic projection of the first light-filtering portion on the base plate at least partially overlaps that of the first light-emitting unit, an orthographic projection of the second light-filtering portion on the base plate at least partially overlaps that of the second light-emitting unit, and an orthographic projection of the third light-filtering portion on the base plate at least partially overlaps that of the third light-emitting unit; and   an angle between a sidewall surface of the optical adjustment portion facing the first light-filtering portion and a plane in a direction parallel to the base plate is α 1 , an angle between a sidewall surface of the optical adjustment portion facing the second light-filtering portion and the plane in the direction parallel to the base plate is α 2 , an angle between a sidewall surface of the optical adjustment portion facing the third light-filtering portion and the plane in the direction parallel to the base plate is α 3 , and α 1 , α 2 , and α 3  satisfy: |α 1 -β|<|α 2 -β|, and |α 1 -β|<|α 3 -β|, wherein β is a critical angle at which total reflection of light occurs at an interface where the optical adjustment portion contacts the light-filtering portion; and light-emitting efficiency of the first light-emitting unit is less than light-emitting efficiency of the second light-emitting unit, and less than light-emitting efficiency of the third light-emitting unit.   
     
     
         11 . The display module according to  claim 10 , wherein α 1 , α 2 , and α 3  satisfy: |α 1 -α 3 |>═α 1 -α 2 |, wherein white light brightness ratio of the third light-emitting unit is greater than white light brightness ratio of the first light-emitting unit, and greater than white light brightness ratio of the second light-emitting unit. 
     
     
         12 . The display module according to  claim 11 , wherein the first light-emitting unit is a blue light-emitting unit, and the third light-emitting unit is a green light-emitting unit. 
     
     
         13 . The display module according to  claim 1 , wherein the light-emitting layer further comprises a pixel definition layer, the pixel definition layer has a pixel opening, the light-emitting unit is located in the pixel opening, and the orthographic projection of the optical adjustment portion on the base plate is located within an orthographic projection of the pixel definition layer on the base plate; and in a direction parallel to the base plate, a distance between the optical adjustment portion and a sidewall surface of the pixel opening is D, and D satisfies: 0 μm≤D≤5 μm. 
     
     
         14 . The display module according to  claim 1 , wherein the optical adjustment portion comprises an organic material, and the optical adjustment portion comprises at least one of polyimide or polymethyl methacrylate. 
     
     
         15 . The display module according to  claim 14 , wherein a thickness of the optical adjustment portion is H, and H satisfies: 1.5 μm≤H≤5 μm. 
     
     
         16 . The display module according to  claim 1 , wherein the refractive index of the optical adjustment portion is n1, and n1 satisfies: n1≤1.55; and the refractive index of the light-filtering portion is n2, and n2 satisfies: n2×1.6. 
     
     
         17 . The display module according to  claim 1 , wherein the display module further comprises a protection layer arranged at a side of the light-filtering layer away from the base plate, and a refractive index of the protection layer is less than the refractive index of the light-filtering portion. 
     
     
         18 . The display module according to  claim 1 , wherein the optical adjustment portion is arranged at a side of the light-shielding portion away from the base plate; the optical adjustment portion wraps at least a sidewall surface of the light-shielding portion; and the display module further comprises a touch control layer arranged between the light-emitting layer and the light-filtering layer, the touch control layer comprises an insulation layer, and a material of the optical adjustment portion is the same as a material of the insulation layer. 
     
     
         19 . The display module according to  claim 1 , wherein the optical adjustment portion is arranged between the light-emitting layer and the light-shielding portion; and the display module further comprises a touch control layer arranged between the light-emitting layer and the light-filtering layer, and the optical adjustment portion is reused as an insulation layer in the touch control layer. 
     
     
         20 . A display apparatus, comprising the display module according to  claim 1 .